Oil Lamp From The S.S. Catalina

I bought this lamp at a yard sale around 1990 here in N. California. I paid $5 for it and do not remember more than that. The cap on it says S.S. Catalina 1957. I googled the steam ship info and the ship was built in 1924 and sunk in 1975. Only certain items were removed from the ship and this lantern was once on it. It's brass and glass. No manufactures lables just the S.S. Catalina 1957 engraving. Tried to find similar lamps online but no luck. I'm thinking it's one of a kind. :)